Bitcoin is and always will be very volatile, but this does not mean having to give up his purchase. If you look at the chart of growth rates you will see that every year the price of bitcoin is increasing. This trend will persist for a very long time so you can buy it at any time.
so i should buy bitcoin at this point or when the value reduce.
Right, and it will always be volatile, And I think for me it is the heart of trading industry where every traders are happy unto it.
And about the question if must buy bitcoin, yes take the chance to buy it now, if you can buy a huge of it do it and then hold in a long term,
until it reach the peak price value.